Authentication

Authentication is the process of verifying the identity of a user, system, or entity before granting access to resources or data. In testing contexts, this term refers to the validation of mechanisms that confirm a user’s identity through credentials such as usernames, passwords, biometric data, or multi-factor authentication methods.

Key testing considerations for authentication include:

• Positive Testing: Ensuring that valid credentials successfully grant access.
• Negative Testing: Confirming that incorrect or expired credentials are properly rejected.
• Boundary Testing: Checking that the system correctly handles credential limits, such as maximum password lengths or character restrictions.
• Multi-Factor Authentication (MFA) Testing: Verifying that additional layers (like one-time codes or biometric verification) work as intended.
• Security Testing: Assessing the system’s resistance to common attacks, such as brute force attempts, credential stuffing, and other unauthorized access methods.

Effective authentication testing is crucial for maintaining data integrity, protecting sensitive information, and ensuring that only authorized users can access the system.